关于We could have had it all为什么这句话中即有一个have,又有一个had?这是什么用法?

we could have had it all What We Could Have Had 歌词 关于We could have had it all为什么这句话中即有一个have,又有一个had?这是什么用法? we could have had it an 是哪首歌里的 英汉互译 If we had been given more time,we could have done it better The day that we had looked forward to _________(到了).We could have a good rest. If it _ for the rain,we _ the picnic yesterday.A were not; could have hadB were not; could haveC had not been; could have had If we had had enough rain last year.we could have gained a good harvest.这句话中的had had如何解释? we could have had it all为什么不直接用have it all?比如we could have it all不行吗?请说出为什么. 为什么rolling in the deep 里的 we could have had it all 是唱成we could 德had it all 这里是不是存在连读什么的? 翻译we could have had it all..but,you played it. We could have had it all Rolling in the Deep!这句话什么意思 急! we could have it all 求Rolling In the Deep高潮:We could have had it all开始我用来做手机铃声求Rolling In the Deep高潮:We could have had it all开始我用来做手机铃声，发到188328699@qq.com， 关于rolling in the deep问题.we could have had it all 这个高潮部分的发音是怎么唱的?如果能补充其他的关键地方的发音 If we could speak,we could have a good row. 求rolling in the deep的高潮部分!从 We could have had it all...开始的音频, :We could have had it allwe could have had it all 翻译是 我们本来可以拥有一切的,:We 是我们,Could 是可以,it all 应该是 一切 ,本来 的意思是怎麼来的?Have 如果是的话,那have是什麼?had又是什麼?为什麼